Coupler



FIG. 1 is a top perspective view of a coupler showing my new design;

FIG. 2 is a bottom perspective view of the coupler shown in FIG. 1;

FIG. 3 is a view of the top of the coupler shown in FIG. 1;

FIG. 4 is a view of one side of the coupler shown in FIG. 1;

FIG. 5 is a view of the bottom of the coupler shown in FIG. 1;

FIG. 6 is a view of one end of the coupler shown in FIG. 1;

FIG. 7 is a view of the other side of the coupler shown in FIG. 4; and,

FIG. 8 is a view of the other end of the coupler shown in FIG. 6.

The broken lines are only for illustrative purposes to show visibleenvironmental structure and form no part of the claimed invention.

I claim the ornamental design for a “coupler,” as shown and described.